Fungicide for Succulents: The Best Brands

Fungicide for Succulents
Fungicide for Succulents

Fungicide for succulents is used to treat fungal infections. In this post, I will share with you some tips on how to apply fungicide and some information you need to know about fungi.

Seeing succulents dying because of fungi is surely one of the hurtful moments for succulent lovers. It is also stressful when you don’t know what to do in this kind of situation. Good thing, succulents can be saved from fungus attacks using fungicides.

But the question is, what is the fungicide for succulents? Copper Fungicide is the most recommended by the succulent growers. In addition to that, it is believed that fungicides with sulfur, neem oil, or triforine may also be helpful in dealing with fungus problems of succulents.

However, fungicides cannot totally destroy all the fungus infections and cure the damaged part of a succulent. The role of fungicides is to stop the spread of the fungus and save the remaining parts of the succulent plant.

Fungicides are very important in protecting succulents from insects and other threats.  However, you don’t need to apply it all the time. Proper caring and monitoring with your succulents are still the best things to do to keep the plants safe from fungal infections.

Fungal Infections in Succulents

They say that succulents are easy plants to care for. It also has aesthetic features that surely entice the eyes of the beholder. They come in different shapes, colors, and sizes. But although they are versatile, they can all get a fungal infection when they experience changes in their environment. The following are common fungal infections that a succulent can get:

Sooty Mold

It is also known as the Black Mold. This fungal infection belongs to the least damaging fungi on succulents. It is believed that this kind of infection starts due to the honeydew exuded by the insects. The insects that are the source of this sweet substance are mealybugs, aphids, whiteflies, and scale. The honeydew becomes the food of the fungi and helps them multiply. This kind of fungi is less harm, however, it can destruct the succulents from performing photosynthesis.

Grey Mold

Botrytis cinerea is the other term for this kind of infection. This is easy to identify, usually seen in the surface area of the succulent leaves and flowers. It produces grayish-brown spore masses. This type of infection is active during cold and wet weather in early spring or summer. The old, damaged or dying plant tissues are usually the sites where this kind of infection starts and spread quickly.

Leaf Spots

These kinds of fungi are harmless for the succulents because they have a wide tolerance for it. Despite its harmless effect, it can still affect the appearance of the succulents. The infected succulent will have shallow tan lesions or permanent stippling or spotting. It can’t give huge damage, but if a succulent is infected by this kind of fungus it can transfer the infection to another succulent and might affect all the succulents.

Fusarium Wilt

A pathogen known as Fusarium oxysporum is the cause of this kind of fungal infection. It can disable a succulent from absorbing water. As a result, a succulent may experience heavy stress, wilting, yellowing, and the worst is death. This fungus starts by entering the roots and go through vascular tissues. There they multiply.

When this happens, the tissues get blocked and absorbing water became hard for succulent. As a result, the succulents will produce brown streaks that can only be seen once you cut the leaf.


This infection is caused by the type of fungi called Colletotrichum. The infected succulent can have a moist tan-colored rot with red-orange, pink pustules on the surface. Unlike other fewer harm fungi, this fungus can affect the wide range of succulent plants.

The spots usually start and spread quickly on leaves and crowns. The fungus spreads taking advantage of contaminated pots and soil. The best treatment, however, is not to reuse soil and make sure that the tools are well sanitized before using. It is also recommended to cut out the infected part in order to avoid the spread of infection.

Root and Crown Rots

This kind of infection is caused by Phytophthora. Detecting the symptoms of this fungal infection is really hard to compare to other fungal infections. The reason is that there are no specific symptoms for this infection. The spread of the infection starts from the soil and goes upward. It can be prevented by giving enough water to the succulents and placing them in well-draining soil.

When and How to Use Fungicide?

Now that you know the several types of fungal infections, it is time to reveal the remedies you can do to save your succulents. You can use fungicides such as copper methylthiophanate, benomyl, dicyclidine, etc., but the copper is highly recommended.

However, copper and other fungicides can only stop the spread of fungus and prevent other plants from getting infected. So, expect that the damaged areas cannot be revived anymore.

It is very important to identify what type of infection the succulent is suffering. This is to make more effective treatment later on.

Copper Fungicides (click here to check this product on Amazon) can control various plant diseases such as peach leaf curl, powdery mildew, black spot, rust, anthracnose, fire blight, and bacterial leaf spot. Aside from succulents, it is also commonly used on vegetables, roses, fruits, and turf.

In each gallon of water, mix 0.5 to 2.0 oz. of copper fungicide. But only use it if you are sure what infection you’re dealing with. Some fungi don’t need fungicides. When applying, make sure that the infected parts of succulents get enough fungicide. Spray it thoroughly. Repeat the spraying procedure every 7 to 10 days.

Branded Fungicides

Aside from the fungicide shared above, there are other brands that you can use for your succulents. Below is the list of trusted brands. You can order them all from Amazon.

Affiliate Disclosure: The list below contains affiliate links. This means that buying the products from Amazon using the link will earn me little commission.

Tank’s-Pro Cactus and Succulent Mix – 1.5 cu ft

Bonide Copper Fungicide Dust

Bonide  Liquid Copper Fungicide

Bonide Neem Oil

Bonide Sulfur Plant Fungicide

Mildew Cure

Monterey Neem Oil

Pure Crop 1


DIY Fungicides for the Garden

If you are eco-friendly and you don’t want to spend a large amount of money, you can create your own fungicides for your succulents. All you need to do is to buy household products and make your own fungi protection.

The ingredients below are what you will be needing to make a fungicide:

Baking Soda

Mix the 4 teaspoons or 1 heaping tablespoon of baking soda in 1 gallon of water.

Dishwashing Soap

It is also a popular homemade plant fungicide but makes sure that your dishwashing soap doesn’t have greaser or bleach.

Cooking oils

Plant growers usually mix cooking oils into homemade plant fungicide. This is to make them cling to leaves and stems.

Pyrethin leaves

The flowers from the painted daisies are also commonly used as a fungicide for plants. The first thing to do is to dry the flower heads. Then, grind or soak them overnight in 1/8 cup of alcohol. Then mix it with 4 gallons of water. Lastly, strain it through cheesecloth

Bordeaux mixture

This DIY fungicide is very helpful during the dormant season for it will control the effect of fungal and bacterial diseases. The ingredients for making this fungicide are ground limestone and powdered copper sulfate. The 4-4-50 strength is the recommended application during the dormant season. Just mix the four parts of each with 50 gallons of water.

If you are interested in the materials I am using for my succulent plants, feel free to visit the page here.

3 Fungicide Purchase Tips

Diagnose the disease correctly

It is really important to identify first the real condition of your plant before considering the fungicide that you will apply to it. Browse the internet or books about the diseases related to the condition of your plant. You can also consult someone who has knowledge or expertise in identifying plant diseases that can recommend the right fungicide for your plant.

Read the label

Reading the labels of the fungicide will give you assurance if the product is safe to use in the home environment. Also, consider if it is not harmful to animals because some of the fungicides can be toxic.

Consider the mixing instructions

Fungicides are not all the same. There will be differences in directions on how it should be mixed and how it should be applied to the plants. It is very important to consider if the fungicide that you will buy is easy to prepare for the needed volume of your plant. Also, don’t forget that you need to have a spray applicator at hand (it will be sufficient for small indoor plants).

Frequently asked question:

How do you get rid of the fungus in the garden soil? First, remove the sick plants. Dig them up and throw them. Don’t use it as a fertilizer of the soil. Second, you need to clean up all garden debris at the end of the season. Third, rotate your crops. Change the way you planted your crops last year. You can also give your garden a break, don’t plant in your garden for a year to fight fungus multiplication. Fourth, Plant disease-resistant varieties. Better find for a plant that can survive from common fungal diseases that start in soil. Lastly, Use fungicide. Give your garden soil and garden plants early protection.

For more tips and information about succulents, feel free to visit my Succulent Guide.


I am a university teacher by profession, researcher, blogger, and gardener.

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